Building a new shop ~900 sq ft. Concrete slab on grade. One side of the shop will have a garage door in front, and some day may actually serve as a garage for the next home owner, hopefully after I die.

Was contemplating a professional epoxy job on the concrete at a round $3,000-4,000, but then my feet and knees starting complaining. Now I'm thinking I'd be better off just leaving the concrete bare and putting down rubber tiles everywhere. Tiles would allow for the expected reconfiguration,...

The other option is to throw mats over the epoxy, but I can see the value in total coverage since I'll be moving around a lot, and the cost of a rubber floor is probably similar to a professional high-solids epoxy job.

So what are people using for interlocking rubber floor tiles? How thick? Who was your supplier?